<p class="title">加载失败时显示的图像</p>
<p class="intro">下面的头像加载失败时会展示 07akioni。</p>
<div>
  <n-avatar
    [on-error]="onError"
    round
    size="small"
    src="empty.png"
    fallback-src="https://07akioni.oss-cn-beijing.aliyuncs.com/07akioni.jpeg"
  ></n-avatar>
</div>
